儲存引擎

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ 變數 | 緩衝池 | InnoDB 狀態 ]

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2026-09-03 13:44:17 0xf7c INNODB MONITOR OUTPUT
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Per second averages calculated from the last 21 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 12264 srv_active, 0 srv_shutdown, 60004 srv_idle
srv_master_thread log flush and writes: 72268
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 19720
OS WAIT ARRAY INFO: signal count 9852
RW-shared spins 4236, rounds 123084, OS waits 4090
RW-excl spins 3290, rounds 13178, OS waits 152
RW-sx spins 50, rounds 1480, OS waits 47
Spin rounds per wait: 29.06 RW-shared, 4.01 RW-excl, 29.60 RW-sx
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TRANSACTIONS
------------
Trx id counter 4419759
Purge done for trx's n:o < 4419759 undo n:o < 0 state: running
History list length 4
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283396615635304, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615631136, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615643640, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615639472, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615626968, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283396615622800, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
 ibuf aio reads:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
114529 OS file reads, 252185 OS file writes, 128983 OS fsyncs
11.14 reads/s, 16384 avg bytes/read, 32.67 writes/s, 12.90 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
 insert 0, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
30.86 hash searches/s, 77.47 non-hash searches/s
---
LOG
---
Log sequence number 785150196
Log flushed up to   785150176
Pages flushed up to 785140477
Last checkpoint at  785132259
0 pending log flushes, 0 pending chkp writes
83156 log i/o's done, 8.05 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 723656
Buffer pool size   1003
Free buffers       715
Database pages     280
Old database pages 0
Modified db pages  35
Percent of dirty pages(LRU & free pages): 3.514
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 325, not young 8913
0.00 youngs/s, 0.00 non-youngs/s
Pages read 114236, created 2041, written 151461
11.14 reads/s, 0.33 creates/s, 22.67 writes/s
Buffer pool hit rate 964 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 280, unzip_LRU len: 0
I/O sum[2335]:cur[2], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=3028, Main thread ID=2480, state: sleeping
Number of rows inserted 383, updated 23212, deleted 266, read 1524416
0.00 inserts/s, 6.71 updates/s, 0.00 deletes/s, 32.57 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 152931
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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